Researchers at the University of Washington studied Seattle’s phased-in increases — first from $9.47 to $11 per hour in 2015 and to $13 per hour in 2016 — and found the second wage increased reduced work hours in low-wage jobs by 9 percent while wages increased only 3 percent.

They concluded that the reduction in hours cost the average employee $179 per month, while the wage increase added only $54. Read more